Correct

甜润

/ tiánrùn / 
Strokes

Definition

sweet and mellow/fresh and moist (air)

Example

As an Adjective

sweet and pleasant

1
Qīngliáng
清凉
tiánrùn
甜润
de
的
kōngqì
空气

cool and refreshing/sweet air

2
Sǎngyīn
嗓音
tiánrùn
甜润

have a sweet voice